1 Functions tidytuesday

1.1 options & settings

options(scipen = 999)

1.3 install libs

library(tidyverse)
Registered S3 methods overwritten by 'dbplyr':
  method         from
  print.tbl_lazy     
  print.tbl_sql      
── Attaching packages ─────────────────────────────────────────────────────────────────── tidyverse 1.3.1 ──
✔ ggplot2 3.3.6     ✔ purrr   0.3.4
✔ tibble  3.1.7     ✔ dplyr   1.0.9
✔ tidyr   1.2.0     ✔ stringr 1.4.0
✔ readr   2.1.2     ✔ forcats 0.5.1
── Conflicts ────────────────────────────────────────────────────────────────────── tidyverse_conflicts() ──
✖ dplyr::filter() masks stats::filter()
✖ dplyr::lag()    masks stats::lag()

1.4 load data

animal_outcomes <- readr::read_csv('https://raw.githubusercontent.com/rfordatascience/tidytuesday/master/data/2020/2020-07-21/animal_outcomes.csv')
Rows: 664 Columns: 12
── Column specification ────────────────────────────────────────────────────────────────────────────────────
Delimiter: ","
chr  (2): animal_type, outcome
dbl (10): year, ACT, NSW, NT, QLD, SA, TAS, VIC, WA, Total

ℹ Use `spec()` to retrieve the full column specification for this data.
ℹ Specify the column types or set `show_col_types = FALSE` to quiet this message.
animal_complaints <- readr::read_csv('https://raw.githubusercontent.com/rfordatascience/tidytuesday/master/data/2020/2020-07-21/animal_complaints.csv')
Rows: 42413 Columns: 5
── Column specification ────────────────────────────────────────────────────────────────────────────────────
Delimiter: ","
chr (5): Animal Type, Complaint Type, Date Received, Suburb, Electoral Division

ℹ Use `spec()` to retrieve the full column specification for this data.
ℹ Specify the column types or set `show_col_types = FALSE` to quiet this message.
brisbane_complaints <- readr::read_csv('https://raw.githubusercontent.com/rfordatascience/tidytuesday/master/data/2020/2020-07-21/brisbane_complaints.csv')
Rows: 31330 Columns: 7
── Column specification ────────────────────────────────────────────────────────────────────────────────────
Delimiter: ","
chr (7): nature, animal_type, category, suburb, date_range, responsible_office, city

ℹ Use `spec()` to retrieve the full column specification for this data.
ℹ Specify the column types or set `show_col_types = FALSE` to quiet this message.

1.5 EDA

head(animal_outcomes)
animal_outcomes %>% glimpse()
Rows: 664
Columns: 12
$ year        <dbl> 1999, 1999, 1999, 1999, 1999, 1999, 1999, 1999, 1999, 1999, 1999, 1999, 1999, 1999, 19…
$ animal_type <chr> "Dogs", "Dogs", "Dogs", "Dogs", "Cats", "Cats", "Cats", "Cats", "Horses", "Horses", "H…
$ outcome     <chr> "Reclaimed", "Rehomed", "Other", "Euthanized", "Reclaimed", "Rehomed", "Other", "Eutha…
$ ACT         <dbl> 610, 1245, 12, 360, 111, 1442, 0, 1007, 0, 1, 0, 0, 2, 90, 39, 9, 390, 173, 746, 31, 2…
$ NSW         <dbl> 3140, 7525, 745, 9221, 201, 3913, 447, 8205, 0, 12, 0, 8, 15, 719, 15, 49, 26, 597, 18…
$ NT          <dbl> 205, 526, 955, 9, 22, 269, 0, 847, 1, 3, 0, 0, 0, 120, 0, 0, 6, 32, 50, 5, 60, 0, 10, …
$ QLD         <dbl> 1392, 5489, 860, 9214, 206, 3901, 386, 10554, 0, 3, 11, 1, 9, 88, 217, 109, 1461, 0, 1…
$ SA          <dbl> 2329, 1105, 380, 1701, 157, 1055, 46, 3415, 2, 10, 1, 0, 13, 61, 2, 54, 175, 446, 861,…
$ TAS         <dbl> 516, 480, 168, 599, 31, 752, 124, 1056, 1, 0, 2, 0, 1, 25, 6, 2, 66, 127, 75, 5, 63, 2…
$ VIC         <dbl> 7130, 4908, 1001, 5217, 884, 3768, 1501, 6113, 87, 19, 0, 4, 418, 315, 18, 179, 4582, …
$ WA          <dbl> 1, 137, 6, 18, 0, 62, 5, 5, 0, 0, 0, 0, 0, 3, 0, 0, 0, 0, 0, 0, 0, 12, 1, 456, 755, 94…
$ Total       <dbl> 15323, 21415, 4127, 26339, 1612, 15162, 2509, 31202, 91, 48, 14, 13, 458, 1421, 297, 4…
animal_outcomes %>% count(animal_type)
animal_outcomes %>% count(outcome)
animal_complaints %>%  head()
animal_complaints %>% glimpse()
Rows: 42,413
Columns: 5
$ `Animal Type`        <chr> "dog", "dog", "dog", "dog", "dog", "dog", "dog", "dog", "dog", "dog", "dog", …
$ `Complaint Type`     <chr> "Aggressive Animal", "Noise", "Noise", "Private Impound", "Wandering", "Attac…
$ `Date Received`      <chr> "June 2020", "June 2020", "June 2020", "June 2020", "June 2020", "June 2020",…
$ Suburb               <chr> "Alice River", "Alice River", "Alice River", "Alice River", "Alice River", "B…
$ `Electoral Division` <chr> "Division 1", "Division 1", "Division 1", "Division 1", "Division 1", "Divisi…
animal_complaints %>% n_distinct("Complaint Type")
[1] 16667
animal_complaints %>% summarise_all(n_distinct)
animal_complaints %>% count(`Complaint Type`) 
animal_complaints %>% 
  count(`Complaint Type`) %>% 
  ggplot(aes(x = `Complaint Type`, y = n)) + 
  geom_col()

1.5.1 changing all chars to factors

animal_complaints <- animal_complaints %>% 
  mutate_if(is.character, as.factor)

str(animal_complaints)
tibble [42,413 × 5] (S3: tbl_df/tbl/data.frame)
 $ Animal Type       : Factor w/ 2 levels "cat","dog": 2 2 2 2 2 2 2 2 2 2 ...
 $ Complaint Type    : Factor w/ 6 levels "Aggressive Animal",..: 1 4 4 5 6 2 3 6 3 3 ...
 $ Date Received     : Factor w/ 81 levels "April 2014","April 2015",..: 47 47 47 47 47 47 47 47 47 47 ...
 $ Suburb            : Factor w/ 85 levels "Aitkenvale","Alice River",..: 2 2 2 2 2 10 10 10 11 11 ...
 $ Electoral Division: Factor w/ 11 levels "Division 1","Division 10",..: 1 1 1 1 1 1 1 1 1 1 ...
animal_complaints %>% 
  select(`Complaint Type`, `Electoral Division`) %>% 
  group_by(`Electoral Division`, `Complaint Type`) %>% 
  summarise(counts = n() ) %>% 
  ggplot(aes(`Electoral Division`, counts, fill = `Complaint Type`)) +
  geom_col() +
  theme(axis.text.x = element_text(angle = 90))
`summarise()` has grouped output by 'Electoral Division'. You can override using the `.groups` argument.

animal_complaints %>% 
  select(`Animal Type`, `Electoral Division`) %>% 
  group_by(`Electoral Division`, `Animal Type`) %>% 
  summarise(counts = n() ) %>% 
  ggplot(aes(`Electoral Division`, counts, fill = `Animal Type`)) +
  geom_col() +
  theme(axis.text.x = element_text(angle = 90))
`summarise()` has grouped output by 'Electoral Division'. You can override using the `.groups` argument.

animal_complaints %>% 
  select(`Animal Type`, `Complaint Type`) %>% 
  group_by(`Complaint Type`, `Animal Type`) %>% 
  summarise(counts = n() ) %>% 
  ggplot(aes(`Complaint Type`, counts, fill = `Animal Type`)) +
  geom_col() +
  theme(axis.text.x = element_text(angle = 90))
`summarise()` has grouped output by 'Complaint Type'. You can override using the `.groups` argument.

1.6 Functions

1.6.1 Renaming column names

animal_complaints <- animal_complaints %>% 
  rename_all(.funs = function(.x){
    .x %>% tolower() %>% str_replace(pattern = " ", replacement = "_")
  })
animal_complaints %>% head()

1.6.2 Convert_to_fraction

animal_outcomes %>%  head()
convert_to_frac <- function(var, total){
  return(var / total)
}

animal_outcomes %>% 
  mutate(across(ACT:WA, ~convert_to_frac(var = .x, total = Total )))
NA

1.6.3 Calling udf inside udf

convert_to_frac_df <- function(df) {
  
  df %>% 
  mutate(across(ACT:WA, ~convert_to_frac(var = .x, total = Total )))
}

convert_to_frac_df(animal_outcomes)
animal_outcomes %>% convert_to_frac_df()

1.6.4 Another way of above function

use . instead of df

tiday_frac <- . %>% mutate(across(ACT:WA, ~convert_to_frac(var = .x, total = Total )))

animal_outcomes %>% tiday_frac()

1.6.5 factors_bar_chart

animal_outcomes %>% 
  select(outcome) %>% 
  count(outcome) %>% 
  mutate(outcome = reorder(outcome, n)) %>% 
  ggplot(aes(x = outcome, y = n, fill = outcome)) +
  geom_col() +
  theme_bw() +
  coord_flip()

factors_bar_chart <- function(df, var){
  var <- enquo(var)
  
  df %>% 
    select(!!var) %>% 
    count(!!var) %>% 
    mutate(!!var := reorder(!!var, n)) %>% 
    ggplot(aes(x = !!var, y = n, fill = !!var)) +
    geom_col() +
    theme_bw() +
    coord_flip()
}

factors_bar_chart(animal_outcomes, outcome)

factors_bar_chart(animal_outcomes, animal_type)

1.7 Functions for Analysing each county

brisbane_complaints %>%  glimpse()
Rows: 31,330
Columns: 7
$ nature             <chr> "Animal", "Animal", "Animal", "Animal", "Animal", "Animal", "Animal", "Animal",…
$ animal_type        <chr> "Dog", "Dog", "Dog", "Dog", "Attack", "Attack", "Dog", "Attack", "Dog", "Dog", …
$ category           <chr> "Fencing Issues", "Fencing Issues", "Defecating In Public", "Fencing Issues", "…
$ suburb             <chr> "SUNNYBANK", "SUNNYBANK HILLS", "SUNNYBANK", "SUNNYBANK", "CALAMVALE", "STRETTO…
$ date_range         <chr> "1st-quarter-2016-17.csv", "1st-quarter-2016-17.csv", "1st-quarter-2016-17.csv"…
$ responsible_office <chr> NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA,…
$ city               <chr> "Brisbane", "Brisbane", "Brisbane", "Brisbane", "Brisbane", "Brisbane", "Brisba…

1.7.1 columns unique value count

brisbane_complaints %>% map_dbl(~n_distinct(.x))
            nature        animal_type           category             suburb         date_range 
                 1                  5                 24                192                 17 
responsible_office               city 
                 9                  1 

1.7.2 converting char to factors

brisbane_complaints <- brisbane_complaints %>% 
                          mutate_if(is.character, as.factor)

str(brisbane_complaints)
tibble [31,330 × 7] (S3: tbl_df/tbl/data.frame)
 $ nature            : Factor w/ 1 level "Animal": 1 1 1 1 1 1 1 1 1 1 ...
 $ animal_type       : Factor w/ 5 levels "Attack","Cat",..: 4 4 4 4 1 1 4 1 4 4 ...
 $ category          : Factor w/ 23 levels "Attack On A Person",..: 7 7 5 7 2 1 NA 2 7 5 ...
 $ suburb            : Factor w/ 191 levels "ACACIA RIDGE",..: 162 163 162 162 29 160 5 63 73 73 ...
 $ date_range        : Factor w/ 17 levels "1st-quarter-2016-17.csv",..: 1 1 1 1 1 1 1 1 1 1 ...
 $ responsible_office: Factor w/ 8 levels "City Safety (Animal Management)",..: NA NA NA NA NA NA NA NA NA NA ...
 $ city              : Factor w/ 1 level "Brisbane": 1 1 1 1 1 1 1 1 1 1 ...

1.7.3 Chart for 1 Suburb

brisbane_complaints %>% 
  filter(suburb == "SUNNYBANK") %>% 
  count(category) %>% 
  drop_na() %>% 
  mutate(category = reorder(category, n)) %>% 
  
  ggplot(aes(x = category, y =n, fill = category)) +
  geom_col() +
  coord_flip() +
  theme_bw()

brisbane_complaints %>% 
  filter(suburb == "SUNNYBANK",
         animal_type == "Attack") %>% 
  count(category) %>% 
  drop_na() %>% 
  mutate(category = reorder(category, n)) %>% 
  
  ggplot(aes(x = category, y =n, fill = category)) +
  geom_col() +
  coord_flip() +
  theme_bw()

1.7.4 Function for charting all suburbs

brisbane_complaints %>% 
  filter(animal_type == "Attack") %>% 
  count(suburb, category) %>% 
  drop_na() %>% 
  mutate(category = reorder(category, n)) 

save_charts_func <- function(df, filename){
  
  temp_chart <- df %>% 
                  mutate(category = reorder(category, n)) %>%
                  ggplot(aes(x = category, y =n, fill = category)) +
                    geom_col() +
                    coord_flip() +
                    theme_bw() +
                    ggtitle(paste0(filename,"Attacks"))
                            
  ggsave(filename = paste0(filename, ".pdf"), 
         plot = temp_chart, 
         width = 11, height = 8.5, units = "in")
}
brisbane_complaints %>% 
  filter(animal_type == "Attack") %>% 
  count(suburb, category) %>% 
  drop_na() %>% 
  nest(-suburb)

1.7.4.1 Applying function to save charts


library(magrittr)

Attaching package: ‘magrittr’

The following object is masked from ‘package:purrr’:

    set_names

The following object is masked from ‘package:tidyr’:

    extract
brisbane_complaints %>% 
  filter(animal_type == "Attack") %>% 
  count(suburb, category) %>% 
  drop_na() %>% 
  nest(-suburb) %>% 
  mutate(suburb = str_replace(suburb, " ","_")) %$% 
  walk2(.x = data, .y = suburb, .f = save_charts_func)

Another way of saving charts

from: https://youtu.be/GxvccD8K49M?t=3262 (About Functional Programming, Purr package)

# dir.create("charts_images")

save_charts_func2 <- function(df, filename){
  
  temp_chart <- df %>% 
                  mutate(category = reorder(category, n)) %>%
                  ggplot(aes(x = category, y =n, fill = category)) +
                    geom_col() +
                    coord_flip() +
                    theme_bw() +
                    ggtitle(paste0(filename,"Attacks"))
                            
  ggsave(filename = paste0("charts_images/",filename, ".png"), 
         plot = temp_chart, 
         width = 11, height = 8.5, units = "in")
}
brisbane_complaints %>% 
  filter(animal_type == "Attack") %>% 
  count(suburb, category) %>% 
  drop_na() %>% 
  nest(-suburb) %>% 
  mutate(suburb = str_replace(suburb, " ","_")) %$%
  walk2(.x = data, .y = suburb, .f = save_charts_func2)

1.8 NHSR data set

from: https://youtu.be/GxvccD8K49M?t=2832

# install.packages("NHSRdatasets")
library(NHSRdatasets)
ae_attendances %>% head()
ae_attendances %>% 
  filter(org_code %>% str_starts("R")) %>% head()
ae_attendances %>% 
  filter(org_code %>% str_starts("R")) %>%
  group_by(org_code, period) %>% 
  summarise(attendances = sum(attendances))
`summarise()` has grouped output by 'org_code'. You can override using the `.groups` argument.
ae_attendances %>% 
  filter(org_code %>% str_starts("R")) %>%
  group_by(org_code, period) %>% 
  summarise(attendances = sum(attendances)) %>% 
  nest()
`summarise()` has grouped output by 'org_code'. You can override using the `.groups` argument.
ae_attendances %>% 
  filter(str_starts(org_code, "R")) %>%
  group_by(org_code, period) %>% 
  summarise(attendances = sum(attendances)) %>% 
  nest()
`summarise()` has grouped output by 'org_code'. You can override using the `.groups` argument.
ae_attendances %>% 
  filter(org_code %>% str_starts("R")) %>%
  group_by(org_code, period) %>% 
  summarise(attendances = sum(attendances)) %>% 
  nest()
`summarise()` has grouped output by 'org_code'. You can override using the `.groups` argument.
.Last.value$data[[1]]
ae_attendances %>% 
  filter(org_code %>% str_starts("R")) %>%
  group_by(org_code, period) %>% 
  summarise(attendances = sum(attendances)) %>% 
  nest() %>% 
  filter(map_dbl(data, nrow) == 36)
`summarise()` has grouped output by 'org_code'. You can override using the `.groups` argument.

1.8.1 udf function to plot

plot_fn <- function(org_code, data){
  data %>%
    ggplot(aes(period, attendances)) +
    geom_line() +
    geom_point() +
    labs(title = org_code) +
    theme_bw() +
    theme(axis.text.x = element_text(angle = 90))
} 
  

1.8.2 Creating plots using map

ae_attendances %>% 
  filter(org_code %>% str_starts("R")) %>%
  group_by(org_code, period) %>% 
  summarise(attendances = sum(attendances)) %>% 
  nest() %>% 
  filter(map_dbl(data, nrow) == 36) %>% 
  mutate(plot = map2(.x = org_code, .y = data, .f = plot_fn))
`summarise()` has grouped output by 'org_code'. You can override using the `.groups` argument.

1.8.3 Saving plots automatically

# dir.create("nhsr_charts")


ae_attendances %>% 
  filter(org_code %>% str_starts("R")) %>%
  group_by(org_code, period) %>% 
  summarise(attendances = sum(attendances)) %>% 
  nest() %>% 
  filter(map_dbl(data, nrow) == 36) %>% 
  
  # creating plot
  mutate(plot = map2(.x = org_code, .y = data, .f = plot_fn)) %>%
  
  # creating file names
  mutate(filename = paste0("nhsr_charts/", org_code, ".png")) 
`summarise()` has grouped output by 'org_code'. You can override using the `.groups` argument.
# dir.create("nhsr_charts")


ae_attendances %>% 
  filter(org_code %>% str_starts("R")) %>%
  group_by(org_code, period) %>% 
  summarise(attendances = sum(attendances)) %>% 
  nest() %>% 
  filter(map_dbl(data, nrow) == 36) %>% 
  
  # creating plot
  mutate(plot = map2(.x = org_code, .y = data, .f = plot_fn)) %>%
  
  # creating file names
  mutate(filename = paste0("nhsr_charts/", org_code, ".png")) %>% 
  
  ungroup() %>% 
  
  # selecting only plots column to save plots
  head(10) %>% 
  select(plot, filename) %>% 
  
  #saving plots
  pwalk(ggsave)
`summarise()` has grouped output by 'org_code'. You can override using the `.groups` argument.
Saving 7 x 7 in image
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# dir.create("nhsr_charts2")

library(magrittr)

ae_attendances %>% 
  filter(org_code %>% str_starts("R")) %>%
  group_by(org_code, period) %>% 
  summarise(attendances = sum(attendances)) %>% 
  nest() %>% 
  filter(map_dbl(data, nrow) == 36) %>% 
  
  # creating plot
  mutate(plot_var = map2(.x = org_code, .y = data, .f = plot_fn)) %>%
  
  # creating file names
  mutate(filename = paste0("nhsr_charts2/", org_code, ".png")) %>% 
  
  ungroup() %>% 
  
  # selecting only plots column to save plots
  head(10) %>% 
  select(plot_var, filename) %$% 
  
  #saving plots
  walk2(.x = filename, .y = plot_var, .f = ggsave)
`summarise()` has grouped output by 'org_code'. You can override using the `.groups` argument.
Saving 7 x 7 in image
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---
title: "User Defined Functions tidytuesday"
output:   
  html_notebook:
    highlight: tango
    df_print: paged
    toc: true
    toc_float: 
      collapsed: false
      smooth_scroll: false
    number_sections: true
    toc_depth: 6
---

<style type="text/css">

body, td {
   font-family: "OCR-B 10 BT";
}
code.r{
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pre {
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</style>

# Functions tidytuesday


## options & settings

```{r setup, include=FALSE}
knitr::opts_chunk$set(echo = TRUE, message = FALSE, warning = FALSE)
```


```{r}
options(scipen = 999)
```


## links

from: 

https://www.youtube.com/watch?v=7oz1qGClrl0
https://github.com/rfordatascience/tidytuesday/tree/master/data/2020/2020-07-21


## install libs

```{r}
library(tidyverse)
```

## load data

```{r}
animal_outcomes <- readr::read_csv('https://raw.githubusercontent.com/rfordatascience/tidytuesday/master/data/2020/2020-07-21/animal_outcomes.csv')

animal_complaints <- readr::read_csv('https://raw.githubusercontent.com/rfordatascience/tidytuesday/master/data/2020/2020-07-21/animal_complaints.csv')

brisbane_complaints <- readr::read_csv('https://raw.githubusercontent.com/rfordatascience/tidytuesday/master/data/2020/2020-07-21/brisbane_complaints.csv')

```


## EDA

```{r}
head(animal_outcomes)
```

```{r}
animal_outcomes %>% glimpse()
```

```{r}
animal_outcomes %>% count(animal_type)
```


```{r}
animal_outcomes %>% count(outcome)
```

```{r}
animal_complaints %>%  head()
```


```{r}
animal_complaints %>% glimpse()
```

```{r}
animal_complaints %>% n_distinct("Complaint Type")
```

```{r}
animal_complaints %>% summarise_all(n_distinct)
```

```{r}
animal_complaints %>% count(`Complaint Type`) 
```

```{r}
animal_complaints %>% 
  count(`Complaint Type`) %>% 
  ggplot(aes(x = `Complaint Type`, y = n)) + 
  geom_col()

```

### changing all chars to factors

```{r}
animal_complaints <- animal_complaints %>% 
  mutate_if(is.character, as.factor)

str(animal_complaints)
```


```{r}
animal_complaints %>% 
  select(`Complaint Type`, `Electoral Division`) %>% 
  group_by(`Electoral Division`, `Complaint Type`) %>% 
  summarise(counts = n() ) %>% 
  ggplot(aes(`Electoral Division`, counts, fill = `Complaint Type`)) +
  geom_col() +
  theme(axis.text.x = element_text(angle = 90))

```


```{r}
animal_complaints %>% 
  select(`Animal Type`, `Electoral Division`) %>% 
  group_by(`Electoral Division`, `Animal Type`) %>% 
  summarise(counts = n() ) %>% 
  ggplot(aes(`Electoral Division`, counts, fill = `Animal Type`)) +
  geom_col() +
  theme(axis.text.x = element_text(angle = 90))

```


```{r}
animal_complaints %>% 
  select(`Animal Type`, `Complaint Type`) %>% 
  group_by(`Complaint Type`, `Animal Type`) %>% 
  summarise(counts = n() ) %>% 
  ggplot(aes(`Complaint Type`, counts, fill = `Animal Type`)) +
  geom_col() +
  theme(axis.text.x = element_text(angle = 90))

```

## Functions

### Renaming column names

```{r}
animal_complaints <- animal_complaints %>% 
  rename_all(.funs = function(.x){
    .x %>% tolower() %>% str_replace(pattern = " ", replacement = "_")
  })
```

```{r}
animal_complaints %>% head()
```


### Convert_to_fraction

```{r}
animal_outcomes %>%  head()
```


```{r}
convert_to_frac <- function(var, total){
  return(var / total)
}

animal_outcomes %>% 
  mutate(across(ACT:WA, ~convert_to_frac(var = .x, total = Total )))

```


### Calling udf inside udf 

```{r}
convert_to_frac_df <- function(df) {
  
  df %>% 
  mutate(across(ACT:WA, ~convert_to_frac(var = .x, total = Total )))
}

convert_to_frac_df(animal_outcomes)
```


```{r}
animal_outcomes %>% convert_to_frac_df()
```


### Another way of above function

use . instead of df

```{r}
tiday_frac <- . %>% mutate(across(ACT:WA, ~convert_to_frac(var = .x, total = Total )))

animal_outcomes %>% tiday_frac()
```


### factors_bar_chart

```{r}
animal_outcomes %>% 
  select(outcome) %>% 
  count(outcome) %>% 
  mutate(outcome = reorder(outcome, n)) %>% 
  ggplot(aes(x = outcome, y = n, fill = outcome)) +
  geom_col() +
  theme_bw() +
  coord_flip()
```

```{r}
factors_bar_chart <- function(df, var){
  var <- enquo(var)
  
  df %>% 
    select(!!var) %>% 
    count(!!var) %>% 
    mutate(!!var := reorder(!!var, n)) %>% 
    ggplot(aes(x = !!var, y = n, fill = !!var)) +
    geom_col() +
    theme_bw() +
    coord_flip()
}

factors_bar_chart(animal_outcomes, outcome)
```

```{r}
factors_bar_chart(animal_outcomes, animal_type)
```

## Functions for Analysing each county

```{r}
brisbane_complaints %>%  glimpse()
```

### columns unique value count

```{r}
brisbane_complaints %>% map_dbl(~n_distinct(.x))
```

### converting char to factors

```{r}
brisbane_complaints <- brisbane_complaints %>% 
                          mutate_if(is.character, as.factor)

str(brisbane_complaints)
```

### Chart for 1 Suburb

```{r}
brisbane_complaints %>% 
  filter(suburb == "SUNNYBANK") %>% 
  count(category) %>% 
  drop_na() %>% 
  mutate(category = reorder(category, n)) %>% 
  
  ggplot(aes(x = category, y =n, fill = category)) +
  geom_col() +
  coord_flip() +
  theme_bw()
```


```{r}
brisbane_complaints %>% 
  filter(suburb == "SUNNYBANK",
         animal_type == "Attack") %>% 
  count(category) %>% 
  drop_na() %>% 
  mutate(category = reorder(category, n)) %>% 
  
  ggplot(aes(x = category, y =n, fill = category)) +
  geom_col() +
  coord_flip() +
  theme_bw()
```

### Function for charting all suburbs 

```{r}
brisbane_complaints %>% 
  filter(animal_type == "Attack") %>% 
  count(suburb, category) %>% 
  drop_na() %>% 
  mutate(category = reorder(category, n)) 
```


```{r}

save_charts_func <- function(df, filename){
  
  temp_chart <- df %>% 
                  mutate(category = reorder(category, n)) %>%
                  ggplot(aes(x = category, y =n, fill = category)) +
                    geom_col() +
                    coord_flip() +
                    theme_bw() +
                    ggtitle(paste0(filename,"Attacks"))
                            
  ggsave(filename = paste0(filename, ".pdf"), 
         plot = temp_chart, 
         width = 11, height = 8.5, units = "in")
}
```


```{r}
brisbane_complaints %>% 
  filter(animal_type == "Attack") %>% 
  count(suburb, category) %>% 
  drop_na() %>% 
  nest(-suburb)
```

#### Applying function to save charts

```{r}

library(magrittr)

brisbane_complaints %>% 
  filter(animal_type == "Attack") %>% 
  count(suburb, category) %>% 
  drop_na() %>% 
  nest(-suburb) %>% 
  mutate(suburb = str_replace(suburb, " ","_")) %$% 
  walk2(.x = data, .y = suburb, .f = save_charts_func)
```

Another way of saving charts

from: https://youtu.be/GxvccD8K49M?t=3262 (About Functional Programming, Purr package)

```{r}
# dir.create("charts_images")
```


```{r}

save_charts_func2 <- function(df, filename){
  
  temp_chart <- df %>% 
                  mutate(category = reorder(category, n)) %>%
                  ggplot(aes(x = category, y =n, fill = category)) +
                    geom_col() +
                    coord_flip() +
                    theme_bw() +
                    ggtitle(paste0(filename,"Attacks"))
                            
  ggsave(filename = paste0("charts_images/",filename, ".png"), 
         plot = temp_chart, 
         width = 11, height = 8.5, units = "in")
}
```


```{r}
brisbane_complaints %>% 
  filter(animal_type == "Attack") %>% 
  count(suburb, category) %>% 
  drop_na() %>% 
  nest(-suburb) %>% 
  mutate(suburb = str_replace(suburb, " ","_")) %$%
  walk2(.x = data, .y = suburb, .f = save_charts_func2)
```


## NHSR data set

from: 
https://youtu.be/GxvccD8K49M?t=2832

```{r}
# install.packages("NHSRdatasets")
```

```{r}
library(NHSRdatasets)
```


```{r}
ae_attendances %>% head()
```

```{r}
ae_attendances %>% 
  filter(org_code %>% str_starts("R")) %>% head()
```


```{r}
ae_attendances %>% 
  filter(org_code %>% str_starts("R")) %>%
  group_by(org_code, period) %>% 
  summarise(attendances = sum(attendances))
```


```{r}
ae_attendances %>% 
  filter(org_code %>% str_starts("R")) %>%
  group_by(org_code, period) %>% 
  summarise(attendances = sum(attendances)) %>% 
  nest()
```


```{r}
ae_attendances %>% 
  filter(str_starts(org_code, "R")) %>%
  group_by(org_code, period) %>% 
  summarise(attendances = sum(attendances)) %>% 
  nest()
```



```{r}
ae_attendances %>% 
  filter(org_code %>% str_starts("R")) %>%
  group_by(org_code, period) %>% 
  summarise(attendances = sum(attendances)) %>% 
  nest()
```


```{r}
.Last.value$data[[1]]
```


```{r}
ae_attendances %>% 
  filter(org_code %>% str_starts("R")) %>%
  group_by(org_code, period) %>% 
  summarise(attendances = sum(attendances)) %>% 
  nest() %>% 
  filter(map_dbl(data, nrow) == 36)
```


### udf function to plot

```{r}
plot_fn <- function(org_code, data){
  data %>%
    ggplot(aes(period, attendances)) +
    geom_line() +
    geom_point() +
    labs(title = org_code) +
    theme_bw() +
    theme(axis.text.x = element_text(angle = 90))
} 
  
```

### Creating plots using map

```{r}
ae_attendances %>% 
  filter(org_code %>% str_starts("R")) %>%
  group_by(org_code, period) %>% 
  summarise(attendances = sum(attendances)) %>% 
  nest() %>% 
  filter(map_dbl(data, nrow) == 36) %>% 
  mutate(plot = map2(.x = org_code, .y = data, .f = plot_fn))
```

### Saving plots automatically

```{r}
# dir.create("nhsr_charts")


ae_attendances %>% 
  filter(org_code %>% str_starts("R")) %>%
  group_by(org_code, period) %>% 
  summarise(attendances = sum(attendances)) %>% 
  nest() %>% 
  filter(map_dbl(data, nrow) == 36) %>% 
  
  # creating plot
  mutate(plot = map2(.x = org_code, .y = data, .f = plot_fn)) %>%
  
  # creating file names
  mutate(filename = paste0("nhsr_charts/", org_code, ".png")) 
```


```{r}
# dir.create("nhsr_charts")


ae_attendances %>% 
  filter(org_code %>% str_starts("R")) %>%
  group_by(org_code, period) %>% 
  summarise(attendances = sum(attendances)) %>% 
  nest() %>% 
  filter(map_dbl(data, nrow) == 36) %>% 
  
  # creating plot
  mutate(plot = map2(.x = org_code, .y = data, .f = plot_fn)) %>%
  
  # creating file names
  mutate(filename = paste0("nhsr_charts/", org_code, ".png")) %>% 
  
  ungroup() %>% 
  
  # selecting only plots column to save plots
  head(10) %>% 
  select(plot, filename) %>% 
  
  #saving plots
  pwalk(ggsave)
```



```{r}
# dir.create("nhsr_charts2")

library(magrittr)

ae_attendances %>% 
  filter(org_code %>% str_starts("R")) %>%
  group_by(org_code, period) %>% 
  summarise(attendances = sum(attendances)) %>% 
  nest() %>% 
  filter(map_dbl(data, nrow) == 36) %>% 
  
  # creating plot
  mutate(plot_var = map2(.x = org_code, .y = data, .f = plot_fn)) %>%
  
  # creating file names
  mutate(filename = paste0("nhsr_charts2/", org_code, ".png")) %>% 
  
  ungroup() %>% 
  
  # selecting only plots column to save plots
  head(10) %>% 
  select(plot_var, filename) %$% 
  
  #saving plots
  walk2(.x = filename, .y = plot_var, .f = ggsave)
```





